An Asgardian currency will not particularly facilitate Asgardian trade, nowhere else accepts it. It will create problems. Far more problems than it solves, least of all in it's maintainence and distribution.
For an example, lets pretend I whore robotic labour to produce custom goods. You buy my goods, but pay me in Astards. This sounds like a reasonable arrangement until you realise my energy supplier to run the plant doesn't accept Astards and even worse, none of the suppliers for the materials required for anything I can make accepts them, either. If it was possible to convert from Astard to a more common accepted currency form then this is most unlikely to occur without transaction cost, so either reduce the value to me in this transaction, or you when I compensate for this by raising the cost via that currency.
Even worse is manual labour - as random citizens of other nations(pure Asgardian employment unfeasible in most sectors) are incredibly unlikely to accept payment in anything other than the native currency, unless the local currency is really, really, poor. They need it because all their bills are in their native currency. Personally, I'd be more prepared to accept payment by the way of good wishes than the currency of a recently founded micronation claiming a native soil of space and seemingly featuring not a great deal of care, attention, or effort to any of the really important details. But there again, I am kind of biased against currency in the first place.
At best, it could facilitate trade between Asgardians - but only if they actually have physical contact, else this trade is more than likely to require postage, and a second currency increasing the complexity to the level of existing systems. And as previously highlighted, they'd have nothing really to be able to spend this on - the resource will rapidly pool in large amounts in few pockets, and they'll have little way to rid themselves of it. This is not something that would be entirely right to describe as a "functional economy".